| A | B |
|---|
| digestion | breaking food down into simpler substances |
| saliva's function | moistens food for digestion |
| ptyalin | chemical in saliva; breaks starches into simple sugars |
| mechanical digestion | physical action of breaking down food into smaller parts |
| mouth | food enters, mechanical & chemical digestion |
| epiglottis | flap of tissue; closes over windpipe when you swallow |
| esophagus | thick, muscular tube that connects mouth & stomach; carries food |
| stomach | organ where mechanical (churning) & chemical (HCl) happen |
| small intestine | releases intestinal juice to break food down (peristalsis) |
| liver | makes bile; stores it in gall bladder |
| pancreas | makes pancreatic juices; helps break down food in small intestine |
| gall bladder | stores bile; releases it in small intestine |
| peristalsis | wavelike muscular contractions that move food through digestive system |
| places where peristalsis happens | esophagus, stomach, small intestine |
| what mucous does | coats & protects stomach walls from hydrochloric acid |
| small intestine | where most digestion of food takes place |
| absorption | digested food pass through villi (small intestine) into bloodstream |
| villi | in small intestine; increase surface area/rate of absorption |
| large intestine | absorbs water from undigested food; helpful bacteria (K & B) |
| rectum | stores solid waste |
| anus | opening allows waste to leave body |
